Mellon Collection, Yale University Library MS. 28. 56 folios. Paper. 148x102mm. 16th Century [c. 1525.] 1. John Dastin. Rosarius philosophorum [with the prologue.] 2. Elementa sunt quattuor... [With a diagram and directions for mixing pigments.] 3. Hermes or Merlin or Rasis. Laudibile sanctum, or Gemma salutaris [a version in 83 (79) verses.]